Door-operating mechanism



May 15, 1923.

J. F. STREIB DOOR OPERATING MECHANISM Filed Nov. 6,

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JOH N E..STREIB, OF AVALON, PENNSYLVANIA, AS SIGJEIOR T0 PRESSED STEELCAR COMPANY, OF PITTSBURGH, PENN$YLVANI1L A CORPORATIDN OF NEW JERSEY.

DOOR-OPERATI NG MECHANISM.

Application filed November 6, 1920. Serial No. 422,209.

To all whom it may] concern:

Be it known that I, JOHN F. STREIB, a citizen of the United States,residing in Avalon, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements in Door-Operating 'Mechanism, of which the following is a specification.

This invention relates to dump cars of the type in which the dischargedoors and any load carried thereby is supported by the discharge dooroperating'shaft', and has for an object the provision of a stiffeningmeans for the discharge door to prevent its distortion, and to provide abetter and more widely distributed bearing for the door upon the shaftthan has hitherto been used.

Another object of the invention is to provide a shoe for a dischargedoor, and a drum and rollers for the door operating shaft, which shoeand rollers are adapted to engage with each other to distribute theweight of the door and any load carried thereby more evenly over theshaft than has heretofore been done.

These and other objects will be apparent from the following description.

Referring now to the drawing in which like reference characters refer tolike parts, Fig. 1, is a plan view of a. discharge door and dooroperating shaft with the invention applied thereto; Fig. 2 is asideelevational view of the same and Fig. 3, is a sectional view of thesame taken on the line 3-3 of Fig. 1.'

Referring now in detail to the drawings, 1 indicates a discharge door,one edge portion of which is hinged to any suitable member of theunder-frame, and 2 indicates the door operating shaft, which issupported by members 3 which may extend longitudinally or transverselyof the car, and will support the free edge of the door.

'It will here be noted that in some cars the door may be hinged to thecenter sill or to the side of the car, and when so hinged the dooroperating shaft 2 will extend longitudinally of the car and will besupported by the transverse members of the underframe. In other types ofcars the doors may be hinged to the transverse members of theunderframe, and when so hinged the shaft 2 will extend transversely ofthe car and will be supported by the longitudinal members of theunderframe.

The free edge portion of the dooris'provlded with a member 4 havingspaced serrated shoe portions 5 which are connected by a web portion 6,which web portion is provided with suitable strengthening ribs. Thismember 4 is also provided with a downwardlydepending lug 7, to which oneend of the door operating chain 8 is connected, the opposite end of suchchain be ing connected with a winding drum or worm 9 which is secured tothe shaft 2. At both ends of the worm or drum 9 a serrated roller 10 isprovided, each of which is adapted to engage with one of the serratedshoe portions 5 when the shaft is being operated to raise. or lower thedoor. When the door is in closed position the shoes 5 rest on therollers 10, and it will be noted that the door will have a number ofsupports distributed at its free edge, and this portion of the door willthus be stiffened against downward bending when heavy material iscarried by the door or is deposited thereon, and the weight of the loadon the shaft will be better distributed and bending of the shaft willtherefore be less likely to occur.

Having thus described the invention what I claim as new and desire tosecure by Letters Patent is 1. The combination with a hinged dischargedoor, of a member rigidly secured to the under side of said door, saidmember having integral spaced shoe portions, a shaft arranged to bemoved into and out of the path of said door, a drum on said shaft havingspaced rollers, each of said rollers'being adapted to engage one. ofsaid shoe portions, and a flexible connection from said member to saiddrum.

2. In a dump car, a hinged discharge door, a member rigidly secured tothe underside of said door, said member having integral spaced shoeportions and a web connecting said portions, a lug extending downwardlyfrom said web, an operating shaft arranged to be moved into and out ofthe path of the free edge of said door,

a winding drmn on said shaft having a 105 winding portion and a rollerat each end of said winding portion, each of said rollers being adaptedto engage with one of sald .shoe portions, and a flexible connectionbetween said ln'g' and Winding portion.

3. In a dump car, a hinged discharge door, a member rigidly secured tosaid door having, integral spaced shoe portions, a bodily movable, shaftfor operatin said door, spaced rollers on said shaft adapted to engagesaid shoe portions as said shaft is moved bodily, and a flexibleconnection between said door and shaft.

4c. In a dump car, a hinged discharge door, a member rigidly secured tothe uiider side of said door,'said member having integral spaced shoeportions, a rotatable and bodily movable shaft for operating andsupporting said door, a winding drum on said shaft haying spaced rollersadapted to engage said shoe portions as said shaft is rotatedandinov'e'd bodily,rand a flexible connection between said member and drum.

'5. In a dump car, a member rigidly securedto the underside of said doorhaving integral spaced serrated shoe portions, a web connecting saidshoe portions, a lug extending downwardly from said web and between saidshoe portions, a bodily movable shaft for operating and supporting saiddoor, a winding drum on 'said shaft having a winding portion and aserrated roller-at bothends of the winding portion, each of said rollersbeing adapted to engage with one of said shoe portions when said shaftis in door supporting position, and a flexible connection between saiddoor and shaft, one endof said connection being secured to said lag andthe other end being

